FIELD: sheet-forming machines. SUBSTANCE: the method consists in transportation of printer's sheets to the machine, according to which the printer's sheets located in the machine by means of at least one slit are separated into several positioned side by side to another part of the printer's sheet. Then, the parts of the printer's sheet are moved apart from one another in the axial direction with formation of gaps between the parts of the printer's sheet located by rows. The parts of the printer's sheet are checked by a monitoring device for the quality of printing and cutting register and laid out irrespective of one another on the piles selected by the monitoring device. EFFECT: provided in the sheet- forming machine with the aid of the built-in monitoring equipment the check-up of the quality of printing and cutting register, provided staking of sheets in a pile selected by the monitoring device for forming of a sorting stack with good rejected sheets. 4 cl, 5 dwg
